150 NORTH AMERICAN FLORA [VoLUME 7 
Telia replacing the uredinia. Teliospores borne singly on pedicels, one-celled, napi- 
form; wall nearly or quite colorless, smooth. 
Type species, Hemileia vastatrix Berk. & Br. (on Coffea sp.). 
1. Hemileia vastatrix Berk. & Br. Gard. Chron. 1869: 1157. 1869. 
II. Uredinia hypophyllous, thickly scattered, or rarely somewhat circinating, very 
small, about 0.1 mm. across, light-orange fading to pale-yellow, pulverulent, projecting 
through stomata and rarely rupturing the epidermis; urediniospores bilateral, slightly 
obovate, flattened on the ventral side, 20-28 by 30-40; wall pale-yellow, 1-1.5 thick, 
rather thickly and very coarsely papillose on dorsal side with bluntly pointed tubercles 
2-4 » long, 1-1.5 in diameter, ventral side smooth, pores obscure. 
III. Telia hypophyllous, arising from uredinia, thickly scattered, very small, about 
0.1 mm. across, pale-yellow; teliospores napiform or globoid, somewhat umbonate above; 
wall pale-yellow or seemingly colorless, thin, 1, slightly if any thicker above, smooth; 
pedicel hyaline, one half to once length of spore, slender. 
ON RUBIACEAE : 
Coffea arabica I,., Costa Rica; Porto Rico. 
TYPE LOCALITY: Ceylon, India, on Coffea sp. 
DISTRIBUTION: Said to have been found in Costa Rica and once in Porto Rico, in the latter 
instance on imported plants and afterward entirely destroyed ; also in eastern Africa, Asia, and 
the Philippine, Samoan, and other islands of the Pacific. 
ILLUSTRATIONS: Gard. Chron. Joc. cil.; E. & P. Nat. Pfl. 1**: f. 35, A-C. 
9. TRANZSCHELIA Arth. Résult. Sci. Congr. Bot. Vienne 340. 1906. 
Cycle of development includes pycnia, aecia, uredinia and telia, with alternating 
phases; autoecious or heteroecious. Pycnia subcuticular, other sori subepidermal. 
Pycnia depressed-conical or hemispherical ; hymenium flat. 
Aecia erumpent, cylindrical. Peridium dehiscent at apex, becoming recurved. Aecio- 
spores globoid; wall colored, finely verrucose. 
Uredinia erumpent, definite, without peridium. Urediniospores borne singly on pedi- 
cels, with paraphyses intermixed, obovoid, somewhat narrowed at both ends; wall colored, 
usually paler below, echinulate; pores equatorial. 
Telia erumpent, definite, pulverulent, without peridium. Teliospores forming heads 
or balls by being attached by short, fragile pedicels to a common stalk, which is short and 
inconspicuous, two-celled by transverse septum, cells rounded and easily falling apart; 
wall colored, verrucose. 
Type species, Puccinia cohaesa Long (on Anemone decapetala). 
Autoecious; urediniospores rounded above. 1. 7. cohaesa. 
Heteroecious; urediniospores narrowed above. 2. T. punctate, 
1. Tranzschelia cohaesa (Long) Arth. Résult. Sci. Congr. Bot. 
Vienne 340. 1906. 
Puccinia cohaesa Long, Bull. Torrey Club 29: 111. 1902. | 
O. Pycnia chiefly hypophyllous, sparsely scattered over large areas, preceding or accom- 
panying the aecia, conspicuous, hemispherical or conical, honey-yellow becoming chocolate- 
brown, subcuticular, 130-160 broad and half to two thirds as high. 
I. Aecia hypophyllous, uniformly and thickly scattered over large areas, short cylindri- 
cal, 0.5 mm. across; peridium ample, divided into few (often 4) widely spreading recurved 
lobes; aeciospores globoid, often angular, 16-21 by 18-23; wall pale golden-yellow, 
medium thick, 1.5-2, closely and minutely granulose. 
Il. Uredinia hypophyllous, scattered, round, 0.3-0.8 mm. across, early naked, pul- 
verulent, cinnamon-brown, ruptured epidermis usually noticeable; paraphyses abundant, 
intermixed with the spores, capitate, or nearly clavate, golden-yellow, 14-18 by 55-754, 
walls rather thin and slightly thicker above; urediniospores obovate or ellipsoid, 15-22 by 
28-38, rounded or obtuse above, somewhat narrowed below; wall golden-yellow, slightly 
